Event details subject to change. Please confirm all information via event website.
Week of Events
Sunday, March 22, 2026
-
March 22, 2026 -All-Out Spring Fever
-
March 22, 2026 -Central Park 5K
All-Out Spring Fever
From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents our 11th annual Spring Fever from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick in October… Kooky-Spooky, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail […]
Central Park 5K
Is it spring or still winter? We'll know when we run the Central Park 5k at the end of March! Celebrate the end of winter with us on this flat and fast course in the historic Central Park neighborhood!
Monday, March 23, 2026
No events on this day.
Tuesday, March 24, 2026
No events on this day.
Wednesday, March 25, 2026
No events on this day.
Thursday, March 26, 2026
No events on this day.
Friday, March 27, 2026
No events on this day.
Saturday, March 28, 2026
-
March 28, 2026 -Behind the Rocks Ultra
-
March 28, 2026 -Polar Plunge 5K
-
March 28, 2026 -City Park Circuit
-
March 28, 2026 -All Hands on Deck Pirates 5K
-
March 28, 2026 -Cryogenic Cannibal Chase
Behind the Rocks Ultra
Behind the Rocks Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks Wilderness Study Area. Moab's last hidden gem; its tall standing Navajo Sandstone domes and fins can be seen from many places along the course. This course traverses some remote trails, and give you the […]
Polar Plunge 5K
Are you ready for the COOLEST event of the season! Whether you're a daring plunger, a speedy 5K runner/walker, or a thrill-seeker ready to do BOTH, the Polar Plunge & 5K promises non-stop excitement and heart-pumping fun - all while supporting Special Olympics Colorado. Take the plunge into a chilly pool, dash through the 5K, or double […]
City Park Circuit
Denver Athletics brings you the Denver Park Circuit Series- Three races at Denver's iconic city parks with the same format: One Lap As Fast As You Can Go! Spring- The City Park Circuit Summer- The Cheesman Park Circuit Fall- The Wash Park Circuit Become a Denver Athletics Road Racing Member ($100) or Full Member ($175) and get free entry […]
All Hands on Deck Pirates 5K
This fun packed 5k is Presented by Give It Forward. Bring your entire family. It's All about community. Every child deserves a great start to the school year—but not every family can afford the supplies to make that possible. That’s where Give It Forward steps in. Our annual School Supply Drive brings the community together […]
Cryogenic Cannibal Chase
Planning on some degenerate behavior at Frozen Dead Guy Days? Start your morning off right with an 8k ripper around Lake Estes. This race is the morning pre game for FDGD where you'll score a sick beanie and a hearty breakfast bagel from Village Bagels before the festival kicks off.
Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.